Beware, Developers: BlazeStealer Malware Discovered in Python Packages on PyPI

A new set of malicious Python packages has slithered their way to the Python Package Index repository with the ultimate aim of stealing sensitive information from compromised developer systems. The packages masquerade as seemingly innocuous obfuscation tools, but harbor a piece of malware called BlazeStealer, Checkmarx said in a report shared with The Hacker News. " retrieves an additional malicious script from an external source, enabling a Discord bot that gives attackers complete control over the victim's computer," security researcher Yehuda Gelb said. The campaign, which commenced in January 2023, entails a total of eight packages named Pyobftoexe, Pyobfusfile, Pyobfexecute, Pyobfpremium, Pyobflite, Pyobfadvance, Pyobfuse, and pyobfgood, the last of which was published in October. Py files that are designed to retrieve a Python script hosted on transfer[. Sh, which gets executed immediately upon their installation. Called BlazeStealer, the malware runs a Discord bot and enables the threat actor to harvest a wide range of information, including passwords from web browsers and screenshots, execute arbitrary commands, encrypt files, and deactivate Microsoft Defender Antivirus on the infected host. What's more, it can render the computer unusable by ramping up CPU usage, inserting a Windows Batch script in the startup directory to shut down the machine, and even forcing a blue screen of death error. "It stands to reason that developers engaged in code obfuscation are likely dealing with valuable and sensitive information, and therefore, to a hacker, this translates to a target worth pursuing," Gelb noted. A majority of downloads associated with the rogue packages originated from the U.S., followed by China, Russia, Ireland, Hong Kong, Croatia, France, and Spain. They were collectively downloaded 2,438 times before being taken down. "The open-source domain remains a fertile ground for innovation, but it demands caution," Gelb said. "Developers must remain vigilant, and vet the packages prior to consumption."

This Cyber News was published on thehackernews.com. Publication date: Thu, 30 Nov 2023 23:19:27 +0000


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